After a specified time interval—usually about ten seconds—the Purge Valve is shut off and the vacuum level in the system is measured by the Fuel Tank Pressure Sensor. ScannerDanner 76,828 views 35:14 P0449 Vent Valve Testing EVAP Systems - Duration: 14:04. briansmobile1 201,884 views 14:04 Evap codes P0456 and P0440 part1 - Duration: 22:18. Before I brought the car in I had just put $15 dollars worth of gas in the tank.

It is not intended as repair advice and we are not responsible for any actions you take on any vehicle. They do things fast and not always properly but they see nothing wrong in getting that $70 -$100 per hour labor rate! I under stand it has something to do with the Evap system, but what should I look at as the culprit? Error Code P0440 Dodge Ram 1500 After the tank got under 3/4 full the light came back on.

P0440 Diagnostic Theory for Shops and TechniciansThe P0440 code indicates that there is a large leak in the EVAP system, but this is somewhat misleading. You don't have to be a rocket scientist to use one. Like I said the error code was genrated after teh Sender unit was replaced because it had a gas leak. http://repairpal.com/OBD-II-Code-P0440 Our Certified shops honor these estimates.Find a ShopRepairPal certifies only the best shops in your neighborhood by verifying quality work, training, and customer satisfaction.Why Certified?Certified Shops honor fair price estimates, bringing

Then the check engine light came on and I got a PO440 code. http://fakeroot.net/error-code/buick-error-code-p0442.php Really. DARTMAN69 2007-09-16 05:06:55 UTC #16 Well after a response like that you can forget any help from me. Causes A code P0440 could mean one or more of the following has happened: The gas cap is not installed or working properly The purge solenoid has failed The canister is Error Code P0440 Chevy Silverado

If it does come back, there will be some flaky failure in the other areas mentioned, since it waits so long to fail each time -- in fact, until after I Matt blindside.AMG04-01-2004, 11:42 PMI guess the guy who you thought "wasn't the brightest bulb in the bunch" was right. The time now is 08:26 PM. http://fakeroot.net/error-code/buick-error-code-66.phpLoading...

If the cap will not seal or hold vacuum/pressure, then it can trigger the P0440 code. Engine Error Code P0440 I replaced the gas cap and removed the negative terminal from the battery for a few minutes and all was well again in car land. Using a scan tool, pay very close attention to the Fuel Tank Pressure readings.

I drove around the country as is my wont, total around 4,000 miles with no further problems. I errased the code so the light wont be on, but as soon as the car runs it's diognostics again it will be back, so what do I have to fix, Verify that the Purge Valve and the Vent Valve work properly and hold vacuum for a sustained amount of time—at least thirty to sixty seconds. Toyota Error Code P0440 GMInsideNews.com is an enthusiasts' forum dedicated entirely to news about GM vehicles.

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Thanks Please enable JavaScript to view the AutoCodes.com Powered by Disqus. Share NOTE: This information is presented for information purposes only. DARTMAN69 2007-09-16 19:23:59 UTC #18 Yes lets be clear. He then said we could check the entire system for you but you will have to pay for it. $89.00 I was not going to have him work on it again?.

I took it back and teh guy double checked the work he did and wanted a lot of moneyto trouble shoot the error code. The PCM commands the EVAP Purge Solenoid OFF once the system has reached a predetermined level of vacuum. The same error code was generated again. Sign in Transcript Statistics 245,069 views 470 Like this video?

mtnagel11-16-2005, 08:48 PMI have the same code comming up on my car, but my car will not start at all.... I fiddled with gas cap, erased it, and it went away for a few days. It's just asking to be spammed. Under precise operating conditions—dictated by engine temperature, speed, and load—the EVAP system stores and purges these captured fuel vapors back into the combustion process.Want to Learn More?The EVAP system is designed